//// file2.cpp -- contains functions called in file1.cpp
//#include <iostream>
//#include <cmath>
//#include "coordin.h"	//structre templates,funcion prototypes
//
//// convert rectangular to polar coordinates
//polar rect_to_polar(rect xypos)
//{
//	using namespace std;
//	polar answer;
//
//	answer.distance =
//		sqrt(xypos.x * xypos.x + xypos.y * xypos.y);
//	answer.angle = atan2(xypos.y, xypos.x);
//	return answer;		//returns a polar structure
//}
//
//// show polar coordinaes,converting angle to degrees
//void show_polar(polar dapos)
//{
//	using namespace std;
//	const double Rad_to_deg = 57.29577951;
//	cout << "disance = " << dapos.distance;
//	cout << ",angle = " << dapos.angle * Rad_to_deg;
//	cout << " degrees\n";
//}